ANB角与Wits值的关系

目的 揭示ANB角与Wits值的关系，探讨已知ANB能否准确预测Wits值，方法：研究选用100例（男女各50例）11－13岁Class I或Class II错He患者矫治前的头颅定位侧位片，患者均有较好骨生长型，I组：13例患者ANB小于等于1．5度，Wits值均为负：II组：61例5．8度大于ANB大于1．5度，Wits值或正或负；III组：26例ANB大于等于5．8度，Wits值均为正，借助计算机对各组进行统计分析。结果：分析发现无男女性别差异（P＞05），II组与III组ANB与Wits两值间有显著相关意义（P＜0．05），回归分析表明I组与II组有统计学意义（P＜0．05），我们在II组可以预测Wits值，准确率为21％，结论 ：尽管许多测量分析数据有统计学意义，但无显著的临床意义。

The comparison and analysis between the

Objective This study was to explore the relationship between the“Wits” appraisal and the ANB angle,and to see how accurately one can predict the “Wits”,given the ANB.Methods Lateral cephalometric radiographs were taken of 50 boys and 50 girls between the ages of 11～13 with either a Class Ⅰ or Class Ⅱ malocclusion and a good growth pattern before treatment.Group Ⅰ,13 subjects of 100 had ANB≤1.5°,and negative “Wits” appraisal;group Ⅱ,61 subjects had 5.8°＞ANB＞1.5°,and “Wits” appraisal either positive or negative;group Ⅲ,26 subjects had ANB angle≥5.8°,and positive “Wits” appraisal.Results Statistical analysis showed that there was no significant difference in sex (P＞0.05)；there was significant correlation between the ANB and “Wits” values in the group Ⅱ and group Ⅲ (P＜0.05);there was statistical significance in regression analysis in the group Ⅰ and group Ⅱ(P＜0.05).We could predict the “Wits” with 21% accuracy in group Ⅱ.Conclusion These figures are statistically significant but clinically irrelevant.